DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S90 Superficial injury of ankle, foot and toes

  • Header · not billable
  • Codes take a 7th character

S90 is not billable. The category heads 306 billable codes in FY2027, grouped under 8 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S90-S99 Injuries to the ankle and foot (S90-S99)
  3. S90 Superficial injury of ankle, foot and toes
Billable codes
306
Subdivisions
8
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
39

Codes in S90

  1. S90.0
    Contusion of ankle
    Header
  2. S90.00
    Contusion of unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  3. S90.01
    Contusion of right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. S90.02
    Contusion of left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. S90.1
    Contusion of toe without damage to nail
    Header
  6. S90.11
    Contusion of great toe without damage to nail
    Header
  7. S90.111
    Contusion of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  8. S90.112
    Contusion of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  9. S90.119
    Contusion of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  10. S90.12
    Contusion of lesser toe without damage to nail
    Header
  11. S90.121
    Contusion of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. S90.122
    Contusion of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. S90.129
    Contusion of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Contusion of toe NOS
  14. S90.2
    Contusion of toe with damage to nail
    Header
  15. S90.21
    Contusion of great toe with damage to nail
    Header
  16. S90.211
    Contusion of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. S90.212
    Contusion of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. S90.219
    Contusion of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  19. S90.22
    Contusion of lesser toe with damage to nail
    Header
  20. S90.221
    Contusion of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. S90.222
    Contusion of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  22. S90.229
    Contusion of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  23. S90.3
    Contusion of foot
    Header
    Excludes2 1

    Excludes2

  24. S90.30
    Contusion of unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Contusion of foot NOS
  25. S90.31
    Contusion of right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  26. S90.32
    Contusion of left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  27. S90.4
    Other superficial injuries of toe
    Header
  28. S90.41
    Abrasion of toe
    Header
  29. S90.411
    Abrasion, right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  30. S90.412
    Abrasion, left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. S90.413
    Abrasion, unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  32. S90.414
    Abrasion, right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. S90.415
    Abrasion, left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  34. S90.416
    Abrasion, unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. S90.42
    Blister (nonthermal) of toe
    Header
  36. S90.421
    Blister (nonthermal), right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. S90.422
    Blister (nonthermal), left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. S90.423
    Blister (nonthermal), unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  39. S90.424
    Blister (nonthermal), right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  40. S90.425
    Blister (nonthermal), left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  41. S90.426
    Blister (nonthermal), unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  42. S90.44
    External constriction of toe
    Header
    Inclusion terms 1

    Inclusion terms

    • Hair tourniquet syndrome of toe
  43. S90.441
    External constriction, right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  44. S90.442
    External constriction, left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  45. S90.443
    External constriction, unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  46. S90.444
    External constriction, right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  47. S90.445
    External constriction, left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. S90.446
    External constriction, unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  49. S90.45
    Superficial foreign body of toe
    Header
    Inclusion terms 1

    Inclusion terms

    • Splinter in the toe
  50. S90.451
    Superficial foreign body, right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. S90.452
    Superficial foreign body, left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  52. S90.453
    Superficial foreign body, unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  53. S90.454
    Superficial foreign body, right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  54. S90.455
    Superficial foreign body, left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. S90.456
    Superficial foreign body, unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  56. S90.46
    Insect bite (nonvenomous) of toe
    Header
  57. S90.461
    Insect bite (nonvenomous), right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  58. S90.462
    Insect bite (nonvenomous), left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  59. S90.463
    Insect bite (nonvenomous), unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  60. S90.464
    Insect bite (nonvenomous), right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  61. S90.465
    Insect bite (nonvenomous), left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  62. S90.466
    Insect bite (nonvenomous), unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  63. S90.47
    Other superficial bite of toe
    Header
    Excludes1 1

    Excludes1

  64. S90.471
    Other superficial bite of right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  65. S90.472
    Other superficial bite of left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  66. S90.473
    Other superficial bite of unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  67. S90.474
    Other superficial bite of right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  68. S90.475
    Other superficial bite of left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  69. S90.476
    Other superficial bite of unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  70. S90.5
    Other superficial injuries of ankle
    Header
  71. S90.51
    Abrasion of ankle
    Header
  72. S90.511
    Abrasion, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  73. S90.512
    Abrasion, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  74. S90.519
    Abrasion, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  75. S90.52
    Blister (nonthermal) of ankle
    Header
  76. S90.521
    Blister (nonthermal), right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  77. S90.522
    Blister (nonthermal), left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  78. S90.529
    Blister (nonthermal), unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  79. S90.54
    External constriction of ankle
    Header
  80. S90.541
    External constriction, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  81. S90.542
    External constriction, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  82. S90.549
    External constriction, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  83. S90.55
    Superficial foreign body of ankle
    Header
    Inclusion terms 1

    Inclusion terms

    • Splinter in the ankle
  84. S90.551
    Superficial foreign body, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  85. S90.552
    Superficial foreign body, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  86. S90.559
    Superficial foreign body, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  87. S90.56
    Insect bite (nonvenomous) of ankle
    Header
  88. S90.561
    Insect bite (nonvenomous), right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  89. S90.562
    Insect bite (nonvenomous), left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  90. S90.569
    Insect bite (nonvenomous), unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  91. S90.57
    Other superficial bite of ankle
    Header
    Excludes1 1

    Excludes1

    • open bite of ankle (S91.05-) S91.05
  92. S90.571
    Other superficial bite of ankle, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  93. S90.572
    Other superficial bite of ankle, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  94. S90.579
    Other superficial bite of ankle, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  95. S90.8
    Other superficial injuries of foot
    Header
  96. S90.81
    Abrasion of foot
    Header
  97. S90.811
    Abrasion, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  98. S90.812
    Abrasion, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  99. S90.819
    Abrasion, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  100. S90.82
    Blister (nonthermal) of foot
    Header
  101. S90.821
    Blister (nonthermal), right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  102. S90.822
    Blister (nonthermal), left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  103. S90.829
    Blister (nonthermal), unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  104. S90.84
    External constriction of foot
    Header
  105. S90.841
    External constriction, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  106. S90.842
    External constriction, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  107. S90.849
    External constriction, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  108. S90.85
    Superficial foreign body of foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Splinter in the foot
  109. S90.851
    Superficial foreign body, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  110. S90.852
    Superficial foreign body, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  111. S90.859
    Superficial foreign body, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  112. S90.86
    Insect bite (nonvenomous) of foot
    Header
  113. S90.861
    Insect bite (nonvenomous), right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  114. S90.862
    Insect bite (nonvenomous), left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  115. S90.869
    Insect bite (nonvenomous), unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  116. S90.87
    Other superficial bite of foot
    Header
    Excludes1 1

    Excludes1

    • open bite of foot (S91.35-) S91.35
  117. S90.871
    Other superficial bite of right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  118. S90.872
    Other superficial bite of left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  119. S90.879
    Other superficial bite of unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  120. S90.9
    Unspecified superficial injury of ankle, foot and toe
    Header
  121. S90.91
    Unspecified superficial injury of ankle
    Header
  122. S90.911
    Unspecified superficial injury of right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  123. S90.912
    Unspecified superficial injury of left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  124. S90.919
    Unspecified superficial injury of unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  125. S90.92
    Unspecified superficial injury of foot
    Header
  126. S90.921
    Unspecified superficial injury of right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  127. S90.922
    Unspecified superficial injury of left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  128. S90.929
    Unspecified superficial injury of unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  129. S90.93
    Unspecified superficial injury of toes
    Header
  130. S90.931
    Unspecified superficial injury of right great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  131. S90.932
    Unspecified superficial injury of left great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  132. S90.933
    Unspecified superficial injury of unspecified great toe +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  133. S90.934
    Unspecified superficial injury of right lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  134. S90.935
    Unspecified superficial injury of left lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  135. S90.936
    Unspecified superficial injury of unspecified lesser toe(s) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

Notes that also apply

Block S90-S99 instructions (Excludes2 4): printed on the block page.

Chapter 19 instructions (Notes 2, Excludes2 2, Use additional code 1): printed on the chapter 19 page.

7th characters

7th characters for S90 defined here

The appropriate 7th character is to be added to each code from category S90

7th characters for S90
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Talon noir → S90.3-
  • Contusion (skin surface intact)ankle → S90.0-
  • Talon noirtoe → S90.1-
  • Contusion (skin surface intact)toe(s) (lesser) → S90.12-
  • Blackheel (foot) → S90.3-
  • Contusion (skin surface intact)foot (except toe(s) alone) → S90.3-
  • Talon noirheel → S90.3-
  • Abrasiontoe(s) (lesser) → S90.416
  • Blister (nonthermal)toe(s) → S90.42-
  • Abrasionankle → S90.51-
  • Blister (nonthermal)ankle → S90.52-
  • Abrasionfoot (except toe(s) alone) → S90.81-
  • Blister (nonthermal)foot (except toe(s) alone) → S90.82-
  • Contusion (skin surface intact)toe(s) (lesser)great → S90.11-
  • Contusion (skin surface intact)toe(s) (lesser)with damage to nail → S90.22-
  • Abrasiontoe(s) (lesser)great → S90.41-
  • Blister (nonthermal)toe(s)great → S90.42-
  • Constrictionexternaltoe(s) (lesser) → S90.44-
  • Hairtourniquet syndrometoe → S90.44-
  • Foreign bodysuperficial, without open woundtoe(s) (lesser) → S90.456
  • Bite(s) (animal) (human)toe(s)superficial NEC → S90.47-
  • Constrictionexternalankle → S90.54-
  • Foreign bodysuperficial, without open woundankle → S90.55-
  • Bite(s) (animal) (human)anklesuperficial NEC → S90.57-
  • Constrictionexternalfoot (except toe(s) alone) → S90.84-
  • Foreign bodysuperficial, without open woundfoot (except toe(s) alone) → S90.85-
  • Bite(s) (animal) (human)foot (except toe(s) alone)superficial NEC → S90.87-
  • Injurysuperficial NECankle → S90.91-
  • Injurysuperficial NECfoot → S90.92-
  • Injurysuperficial NECtoe(s) → S90.93-
  • Contusion (skin surface intact)toe(s) (lesser)greatwith damage to nail → S90.21-
  • Constrictionexternaltoe(s) (lesser)great → S90.44-
  • Foreign bodysuperficial, without open woundtoe(s) (lesser)great → S90.45-
  • Bite(s) (animal) (human)toe(s)superficial NECinsect → S90.46-
  • Bite(s) (animal) (human)toe(s)superficial NECgreat → S90.47-
  • Bite(s) (animal) (human)anklesuperficial NECinsect → S90.56-
  • Bite(s) (animal) (human)foot (except toe(s) alone)superficial NECinsect → S90.86-
  • Injurysuperficial NECtoe(s)great → S90.93-
  • Bite(s) (animal) (human)toe(s)superficial NECinsectgreat → S90.46-

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy